Null fill ensures that negative angles (down) are filled with antenna coverage so that subscribers near or below the antenna do not experience additional attenuation.
Elevation plane antenna pattern
The antenna’s electrical downtilt (peak of gain is 2° down) ensures that the energy is projected upon a smaller footprint, making frequency reuse easier.
When replacing a sector antenna with the Cambium Sector, please pay attention to the built-in downtilt specification, as the antenna physical angle may not match with the previous antenna deployed.